How To Fix /PM0/ABB_MESSAGES811 - SI: No comparison possible for entity &1 with key &2 (self reference)

SAP Error Message - Details

• Message type: E = Error

• Message class: /PM0/ABB_MESSAGES -

• Message number: 811

• Message text: SI: No comparison possible for entity &1 with key &2 (self reference)

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /PM0/ABB_MESSAGES811 - SI: No comparison possible for entity &1 with key &2 (self reference) ?

  The SAP error message /PM0/ABB_MESSAGES811 SI: No comparison possible for entity &1 with key &2 (self reference) typically indicates that there is an issue with a self-referential comparison in the context of a specific entity in the SAP system. This error often arises in scenarios involving data comparisons, such as during data validation, reporting, or when executing certain transactions.
  Cause:
  
  Self-Reference Issue: The error suggests that the system is trying to compare an entity with itself, which is not a valid operation in the context of the process being executed.
  Data Integrity Issues: There may be issues with the data integrity or configuration of the entities involved, leading to a situation where the system cannot perform the required comparison.
  Incorrect Configuration: The configuration of the entities or the parameters being passed to the function/module may be incorrect, leading to this self-reference scenario.
  
  Solution:
  
  Check the Data: Review the data for the entity identified by &1 and the key &2. Ensure that the data is correctly populated and does not lead to a self-reference.
  Review Configuration: Check the configuration settings related to the entities involved. Ensure that they are set up correctly and that there are no circular references or misconfigurations.
  Debugging: If you have access to debugging tools, you can trace the execution of the program or transaction that triggered the error to identify where the self-reference is occurring.
  Consult Documentation: Refer to SAP documentation or notes related to the specific module or transaction you are working with. There may be known issues or additional guidance available.
  Contact SAP Support: If the issue persists and you cannot identify the cause, consider reaching out to SAP support for assistance. Provide them with the error message details and any relevant context.
  
  Related Information:
  
  Transaction Codes: Depending on the context, you may want to check transaction codes related to the specific module or functionality you are working with.
  SAP Notes: Search for SAP Notes that may address this specific error message or provide guidance on similar issues.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to diagnose and resolve the error message effectively.